function getTouch(el: HTMLElement | Window, x: number, y: number) {
  return {
    identifier: Date.now(),
    target: el,
    pageX: x,
    pageY: y,
    clientX: x,
    clientY: y,
    radiusX: 2.5,
    radiusY: 2.5,
    rotationAngle: 10,
    force: 0.5,
  }
}

// Trigger pointer/touch event
export function trigger(
  wrapper: any,
  eventName: string,
  x = 0,
  y = 0,
  options: any = {}
) {
  const el = 'element' in wrapper ? wrapper.element : wrapper
  const touchList = options.touchList || [getTouch(el, x, y)]

  if (options.x || options.y) {
    touchList.push(getTouch(el, options.x, options.y))
  }

  const event = document.createEvent('CustomEvent')
  event.initCustomEvent(eventName, true, true, {})

  Object.assign(event, {
    clientX: x,
    clientY: y,
    touches: touchList,
    targetTouches: touchList,
    changedTouches: touchList,
  })

  el.dispatchEvent(event)
}

export function sleep(delay = 0): Promise<void> {
  return new Promise((resolve) => {
    setTimeout(resolve, delay)
  })
}

// simulate drag gesture
export function triggerDrag(el: any, relativeX = 0, relativeY = 0): void {
  let x = relativeX
  let y = relativeY
  let startX = 0
  let startY = 0
  if (relativeX < 0) {
    startX = Math.abs(relativeX)
    x = 0
  }
  if (relativeY < 0) {
    startY = Math.abs(relativeY)
    y = 0
  }
  trigger(el, 'touchstart', startX, startY)
  trigger(el, 'touchmove', x / 4, y / 4)
  trigger(el, 'touchmove', x / 3, y / 3)
  trigger(el, 'touchmove', x / 2, y / 2)
  trigger(el, 'touchmove', x, y)
  trigger(el, 'touchend', x, y)
}
